Marketingshift has additional information the the Kanoodle Geotargeted PPC offerings that I reported on yesterday.

Geotargeting works both ways, helping local advertisers to reach national audiences, and vice versa. Media companies (newspapers, tv, radio) should be active consumers as they want to grow their audience without diluting the value that they provide to local advertisers.

Similarly, national publishers can customize their offerings so that they can work with local advertisers. Networks should offer aggregate traffic from national media (eg. the desirable NY Times, Wall Street Journal, BusinessWeek audience) and deliver ads for financial services companies only to residents in the Houston metro area, for example.